This year, an update was to correct a problem with the location in case of an accident, and the Mercedes Me reported the accident for help. The update was done via a download directly to the car back in May.
I do not know of any others. If you take the car to the dealer, they can check if any updates are needed. In my years of MB cars, any updates were for have been more of drive train problems, or firmware for performance, and one time a missing label.
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